What is COVID-19 asymptomatic infection?
COVID-19 asymptomatic infection means the people who are positive in COVID-19 testing but without any clinical symptoms, like fever, tiredness, and dry cough, etc.
General speaking, some people are infected by coronavirus, but they have no symptoms, no one knows they are sick except testing.
There are two types of asymptomatic infection. One is the virus is still in incubation period, when it past, they will show symptoms; the other is they have no symptoms all the time.